Organic light-emitting display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9343699-B2
Application number	US-201414262757-A
Country	US
Kind code	B2
Filing date	Apr 27, 2014
Priority date	Aug 28, 2013
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

An organic light-emitting display apparatus including a substrate; a display unit which defines an active area of the substrate and includes a thin film transistor; concave-convex portions protruded from the substrate in an area outside the active area; and an encapsulation layer which encapsulates the display unit. The thin film transistor includes an active layer, a gate insulating layer on the active layer, a gate electrode, a source electrode, a drain electrode, and an interlayer insulating layer between the gate electrode and the source electrode, and between the gate electrode and the drain electrode. The concave-convex portions include portions of the gate insulating layer and the interlayer insulating layer, and the encapsulation layer covers the concave-convex portions.

First claim

What is claimed is:

1. An organic light-emitting display apparatus comprising:
a substrate;
a display unit which defines an active area of the substrate, the display unit comprising a thin film transistor and an organic light-emitting device which are connected to each other in the active area of the substrate;
concave-convex portions protruded from the substrate in an area outside the active area and spaced apart from each other; and
an encapsulation layer covering the thin film transistor and the organic light-emitting device in the active area of the substrate, to encapsulate the display unit on the substrate,
wherein
the thin film transistor comprises an active layer, a gate insulating layer on the active layer, a gate electrode, a source electrode, a drain electrode, and an interlayer insulating layer between the gate electrode and the source electrode, and between the gate electrode and the drain electrode,
the concave-convex portions comprise portions of the gate insulating layer and the interlayer insulating layer, and
the encapsulation layer covering the thin film transistor and the organic light-emitting device in the active area of the substrate is extended from the active area to the area outside the active area to contact the concave-convex portions comprising the portions of the gate insulating layer and the interlayer insulating layer.

2. The organic light-emitting display apparatus of claim 1 , wherein each of the concave-convex portions has a double-layer structure comprising the portions of the gate insulating layer and the interlayer insulating layer.

3. The organic light-emitting display apparatus of claim 1 , wherein
the encapsulation layer comprises an inorganic layer, and
the inorganic layer contacts the concave-convex portions.

4. The organic light-emitting display apparatus of claim 3 , wherein the inorganic layer and the interlayer insulating layer comprise a same material.

5. The organic light-emitting display apparatus of claim 3 , wherein the inorganic layer and the gate insulating layer comprise a same material.

6. The organic light-emitting display apparatus of claim 1 , wherein
the encapsulation layer has a stacked structure comprising an organic layer and an inorganic layer, and
the inorganic layer contacts the concave-convex portions.

7. The organic light-emitting display apparatus of claim 6 , wherein the stacked structure comprises more than one of the organic layer or the inorganic layer alternated with each other.

8. The organic light-emitting display apparatus of claim 6 , wherein the inorganic layer and the interlayer insulating layer comprise a same material.

9. The organic light-emitting display apparatus of claim 6 , wherein the inorganic layer and the gate insulating layer comprise a same material.

10. The organic light-emitting display apparatus of claim 1 , further comprising a protective layer between the encapsulation layer and the display unit.

Assignees

• Samsung Display Co Ltd

Inventors

• Kwak Won-Kyu

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K50/8445

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/431

  having different compositions, shapes, layouts or thicknesses of gate insulators in different TFTs · CPC title